Which of the following will not have the same number of valence electrons?

carbon

silicon

lead

bismuth

Which statement most accurately compares the temperature of the core of the sun to its surface

What energy conversion is ocurring when energy is given off the sun

What did scientists recently discover off the coast of Alabama in the Gulf of Mexico?

A piece of lithium is placed on the surface of some water in a beaker. hydrogen is given off. Lithium hydroxide is formed. What is the word equation

If one force on an object on an object is 5N upward and the other obect is 10N downward, what is the object's motion?

Allows water to pass through easily

Which is a cause of desertification? A. farming B. creating reservoirs C. overgrazing D. driving motor vehicles

What happens when the threat of exposure to dirty air is reduced in a community? There is enough oxygen available for people's lungs to function normally The amount of indoor air pollutants released during a fossil fuel burn decreases There is a

Is chicken noodle soup an element, a compound, a homogeneous mixture, or a heterogeneous mixture?

How is the amount of sunlight affect the makeup of an ecosystem